Strictly speaking, the Chinese scientific name of the flower in Hong Kong is Red Bauhinia, which is commonly known as "Bauhinia" in Hong Kong, and the emblem pattern of Hong Kong is also changed from this flower.
In addition, I made a special trip to the Wen Wei Po reference room in Hong Kong to consult a large number of documents, and the answers were: 1965. Hong Kong people recognized Bauhinia as a beautiful and spectacular flower, so they chose it as the city flower (see the first photo of Hong Kong Yearbook 1966).
Bauhinia, alias: Bauhinia, Bauhinia, Bauhinia. It is purple in color and shaped like a butterfly. Before the leaves grow out, the flowers on the branches are in full bloom, so they are also called "eyes full of red". The flowering period is from winter solstice to spring, with racemes and five petals, and the flowering period is lasting. Bauhinia is the regional flower of Hong Kong Special Administrative Region.